二年级两位数加减法口算题 21+37= 32+32= 52-31= 40+28= 40+35= 58-20= 28+41= 19+40= 87-21= 21+30= 77-74= 12+63= 80+18= 98-20= 32+24= 21+16= 17+60= 89-37= 51+44= 66-23= 98-96= 96-30= 55-20= 28+40= 76+11= 48-20= 89-74= 78-22= 33+66= 48-25= 42+52= 22+70= 43+40= 34+33= 25-24= 14+31= 98-85= 37+52= 32+17= 53+23= 99-58= 70+14= 88-67= 51+31= 51+20= 52-30= 13+41= 41+12= 30+47= 89-86= 86-73= 14+33= 45+21= 45+22= 93-71= 43+50= 50+32= 77-56= 64-60= 22+44= 47-36= 51-40= 98-73= 88-85= 68-37= 75-51= 44+35= 40+45= 32+63= 95-54= 89-33= 40+36= 82+16= 34+35= 41+20= 78-65= 69-12= 96-14= 79-63= 98-71= 13+60= 51+17= 96-21= 62-41= 41+30= 43+24= 60+12= 12+11= 12+41= 99-53= 47+31= 40+54= 51+28= 60+11= 57-40= 11+77= 43+24= 99-70= 30+59= 21+52= 11+68= 25+51= 98-72= 89-28= 73-20= 21+62= 43+34= 11+50= 40+33= 61+18= 37-33= 89-17= 86-